Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, California


Version #6: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 10:44:24 PM (PDT) on Thursday, July 17, 2025.
The magnitude 0.4 event occurred 3 km (2 miles) ESE of Lake Henshaw, CA.
The hypocentral depth is 11 km ( 7 miles).


Magnitude 0.4 - local magnitude (Ml)
Time Thursday, July 17, 2025 at 10:44:24 PM (PDT)
Friday, July 18, 2025 at 5:44:24 (UTC)
Distance from Lake Henshaw, CA - 3 km (2 miles) ESE (106 degrees)
Warner Springs, CA - 10 km (6 miles) WSW (238 degrees)
Palomar Observatory, CA - 19 km (12 miles) SE (137 degrees)
Julian, CA - 21 km (13 miles) NW (326 degrees)
Ramona, CA - 25 km (16 miles) NNE (31 degrees)
Coordinates 33 deg. 14.0 min. N (33.233N), 116 deg. 43.7 min. W (116.728W)
Depth 10.82 km (6.70 miles)
Quality Excellent
Location Quality Parameters Nst=24, Nph=35, Dmin=8.5 km, Rmss=0.14 sec, Erho=0.22 km, Erzz=0.61 km, Gp=34 degrees
Event ID# ci41025383
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